package com.zxl.web.async;

import org.apache.commons.lang.RandomStringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.async.DeferredResult;

import java.util.concurrent.Callable;

@RestController
public class AsyncController {
    private Logger logger = LoggerFactory.getLogger(getClass());
    @Autowired
    private MockQueue mockQueue;
    @Autowired
    private DeferredResultHolder deferredResultHolder;

    @RequestMapping("order")
    public Callable<String> order() throws InterruptedException {
        logger.info("主线程开始...");
        Callable<String> result = () -> {
            logger.info("子线程开始");
            Thread.sleep(1000);
            logger.info("子线程返回");
            return "success";
        };
        logger.info("主线程返回...");
        return result;
    }

    @RequestMapping("order2")
    public DeferredResult<String> order2() throws InterruptedException {
        logger.info("主线程开始...");
        String randomNumeric = RandomStringUtils.randomNumeric(8);
        mockQueue.setPlaceOrder(randomNumeric);
        DeferredResult<String> result = new DeferredResult<>();// 存放子线程返回的信息
        deferredResultHolder.getMap().put(randomNumeric, result);
        logger.info("主线程返回...");
        return result;
    }
}
